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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 16 — Aug. 2, 2010
  • pp: 16663–16670

Nonlinear coupling of relative intensity noise from pump to a fiber ring laser mode-locked with carbon nanotubes

Kan Wu, Jia Haur Wong, Ping Shum, Songnian Fu, Chunmei Ouyang, Honghai Wang, E. J. R. Kelleher, A. I. Chernov, E. D. Obraztsova, and Jianping Chen  »View Author Affiliations


Optics Express, Vol. 18, Issue 16, pp. 16663-16670 (2010)
http://dx.doi.org/10.1364/OE.18.016663


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Abstract

Pump relative intensity noise (RIN) has been recognized as a major source of noise in mode-locked lasers. The coupling of RIN from the pump to the output of a passively mode-locked fiber laser (PMFL) is systematically investigated using a pump modulation technique. It is found that the linear RIN coupling ratio from pump to PMFL is decreased with an increase in modulation frequency and is independent of modulation power. Moreover, the nonlinear RIN coupling from pump to PMFL is clearly demonstrated with a square wave modulated pump. The nonlinear RIN coupling ratio is noise power dependent. An exponential decay model based on the view of gain modulation is proposed and explains well the behavior of the nonlinear coupling phenomena.

© 2010 OSA

OCIS Codes
(120.3940) Instrumentation, measurement, and metrology : Metrology
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4050) Lasers and laser optics : Mode-locked lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: April 28, 2010
Revised Manuscript: June 8, 2010
Manuscript Accepted: June 15, 2010
Published: July 23, 2010

Citation
Kan Wu, Jia Haur Wong, Ping Shum, Songnian Fu, Chunmei Ouyang, Honghai Wang, E. J. R. Kelleher, A. I. Chernov, E. D. Obraztsova, and Jianping Chen, "Nonlinear coupling of relative intensity noise from pump to a fiber ring laser mode-locked with carbon nanotubes," Opt. Express 18, 16663-16670 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-16-16663


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